describe('support for CircleMarker elements', function () {
    /////////////////////////////
    // SETUP FOR EACH TEST
    /////////////////////////////
    var clock, div, map, group;

    beforeEach(function () {
        clock = sinon.useFakeTimers();

        div = document.createElement('div');
        div.style.width = '200px';
        div.style.height = '200px';
        document.body.appendChild(div);

        map = L.map(div, {maxZoom: 18, trackResize: false});

        // Corresponds to zoom level 8 for the above div dimensions.
        map.fitBounds(new L.LatLngBounds([
            [1, 1],
            [2, 2]
        ]));
    });

    afterEach(function () {
        if (group instanceof L.MarkerClusterGroup) {
            group.clearLayers();
            map.removeLayer(group);
        }

        map.remove();
        div.remove()
        clock.restore();

        clock = div = map = group = null;
    });

    /////////////////////////////
    // TESTS
    /////////////////////////////
    it('appears when added to the group before the group is added to the map', function () {

        group = new L.MarkerClusterGroup();

        var marker = new L.CircleMarker([1.5, 1.5]);

        group.addLayer(marker);
        map.addLayer(group);

        // Leaflet 1.0.0 now uses an intermediate L.Renderer.
        // marker > _path > _rootGroup (g) > _container (svg) > pane (div)
        expect(marker._path.parentNode.parentNode).to.not.be(undefined);
        expect(marker._path.parentNode.parentNode.parentNode).to.be(map.getPane('overlayPane'));

        clock.tick(1000);
    });

    it('appears when added to the group after the group is added to the map', function () {

        group = new L.MarkerClusterGroup();

        var marker = new L.CircleMarker([1.5, 1.5]);

        group.addLayer(marker);
        map.addLayer(group);

        expect(marker._path.parentNode.parentNode).to.not.be(undefined);
        expect(marker._path.parentNode.parentNode.parentNode).to.be(map.getPane('overlayPane'));

        clock.tick(1000);
    });

    it('appears animated when added to the group after the group is added to the map', function () {

        group = new L.MarkerClusterGroup({animateAddingMarkers: true});

        var marker = new L.CircleMarker([1.5, 1.5]);
        var marker2 = new L.CircleMarker([1.5, 1.5]);

        map.addLayer(group);
        group.addLayer(marker);
        group.addLayer(marker2);

        expect(marker._path.parentNode.parentNode.parentNode).to.be(map.getPane('overlayPane'));
        expect(marker2._path.parentNode.parentNode.parentNode).to.be(map.getPane('overlayPane'));

        clock.tick(1000);

        expect(marker._path.parentNode).to.be(null);
        expect(marker2._path.parentNode).to.be(null);
    });

    it('creates a cluster when 2 overlapping markers are added before the group is added to the map', function () {

        group = new L.MarkerClusterGroup();

        var marker = new L.CircleMarker([1.5, 1.5]);
        var marker2 = new L.CircleMarker([1.5, 1.5]);

        group.addLayers([marker, marker2]);
        map.addLayer(group);

        expect(marker._path).to.be(undefined);
        expect(marker2._path).to.be(undefined);

        expect(map._panes.markerPane.childNodes.length).to.be(1);

        clock.tick(1000);
    });

    it('creates a cluster when 2 overlapping markers are added after the group is added to the map', function () {

        group = new L.MarkerClusterGroup();

        var marker = new L.CircleMarker([1.5, 1.5]);
        var marker2 = new L.CircleMarker([1.5, 1.5]);

        map.addLayer(group);
        group.addLayer(marker);
        group.addLayer(marker2);

        expect(marker._path.parentNode).to.be(null); //Removed then re-added, so null
        expect(marker2._path).to.be(undefined);

        expect(map._panes.markerPane.childNodes.length).to.be(1);

        clock.tick(1000);
    });

    it('disappears when removed from the group', function () {

        group = new L.MarkerClusterGroup();

        var marker = new L.CircleMarker([1.5, 1.5]);

        group.addLayer(marker);
        map.addLayer(group);

        expect(marker._path.parentNode).to.not.be(undefined);
        expect(marker._path.parentNode.parentNode.parentNode).to.be(map.getPane('overlayPane'));

        group.removeLayer(marker);

        expect(marker._path.parentNode).to.be(null);

        clock.tick(1000);
    });
});